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Question 2:
Scientists suggest two ways the asteroid tails formed: the asteroid tails may have been the result of a collision, or the asteroid is spinning so fast that material is spinning off of it, creating the tails. What evidence is presented in the story to support one idea over the other?
Answer:

Scientists say that if the tails resulted from a collision, there would have been one big blast of dust, not several smaller blasts, as shown in the Hubble images. They also report that the six tails were created in six periodic ejection events over a series of five months.

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